When it comes to evening wear, the rules have changed. And the new rule is: break the rules. Dresses that caught our attention on the red carpet have moved from girly garments to all-out daring designs.

Bob Diamond, who stepped down as head of Barclays last year amid a rate-rigging scandal, is considering backing a firm started by former executives at the bank’s investment unit that was acquired by BlackRock in 2009, according to a person familiar with the matter.